简介：目的探讨一组特殊设计镜片对周边屈光度、周边清晰视力范围和主观感受的影响。方法3例（4眼）被试者，年龄22-31岁，屈光度-2．0D，按随机顺序分别在单眼配戴普通非球面镜片、成长乐镜片、视特保大、中、小光区镜片的情况下进行周边屈光度、周边清晰视力范围测量和主观评分，主观评分包括远距和近距戴镜舒适度、清晰度和接受度。结果配戴5种镜片时，被试眼相对周边屈光度均为远视状态，远视度数随周边角度增加而增加。配戴普通非球面镜片和视特保大光区镜片时周边远视度数最大，视特保中光区镜片其次，成长乐镜片和视特保小光区镜片最小；配戴普通非球面镜片和视特保大光区镜片时的周边清晰视力范围最大，其次是视特保中光区镜片，最小的是成长乐镜片和视特保小光区镜片；远距评分为普通非球面镜片最高，视特保大光区镜片其次，然后为视特保中光区镜片，成长乐镜片及视特保小光区镜片最差；近距评分视特保大光区镜片接近普通非球面镜片，视特保中光区镜片和成长乐镜片其次，视特保小光区镜片最差。结论不同设计的中周部加光镜片对改变周边屈光度的作用存在差异，其配戴后的顺应性与镜片改变周边屈光度的程度呈负相关。

简介：AIM:Todemonstratethemorphologyandstructureofinvitroreconstructedtissue-engineeredhumancornealepithelium(TE-HCEP)withseedercellsfromanuntransfectedHCEPcellline.·METHODS:TheTE-HCEPswerereconstructedinvitrowithseedercellsfromanuntransfectedHCEPcellline,andscaffoldcarriersofdenudedamnioticmembrane(dAM)inair-liquidinterfaceculturefor3,5,7and9days,respectively.Thespecimenswereexaminedwithhematoxylin-eosin(HE)stainingofparaffin-section,immunocytochemicalstaining,scanningandtransmissionelectronmicroscopy.·RESULTS:DuringinvitroreconstructionofTE-HCEP,HCEPcellsformeda3-4,6-7and8-10layersofanHCEP-likestructureondAMsinair-liquidinterfaceculturefor3,5and7days,respectively.Butthecellsdeceasedto5-6layersandthestructureofstraifiedepitheliumbecamelooseatday9.Andthecellsmaintainedpositiveexpressionofmarkerproteins(keratin3andkeratin12),cell-junctionproteins(zonulaoccludens-1,E-cadherin,connexin43andintegrinβ1)andmembranetransportproteinofNa+-K+ATPase.TheHCEPcellsinTE-HCEPwererichinmicrovillionapicalsurfaceandestablishednumerouscell-cellandcell-dAMjunctionsatday5.·CONCLUSION:ThemorphologyandstructureofthereconstructedTE-HCEPweresimilartothoseofHCEPinvivo.TheHCEPcellsinthereconstructedTE-HCEPmaintainedthepropertiesofHCEPcells,includingabilitiesofformingintercellularandcell-extracellularmatrixjunctionsandabilitiesofperformingmembranetransportation.TheuntransfectedHCEPcellsanddAMscouldpromisinglybeusedinreconstructionHCEPequivalentforclinicalcornealepitheliumtransplantation.